Etymotic ER4SR

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$169.89 to $299.00

6 Critic Reviews

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Page last updated Jun 11, 2026

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4.5 (6)

$224.96

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4.1 (289)

$224.96 $214.95 $10.01 · All time low

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$299.00 6 available New

$292.00 1 available Used

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5.0 (10)

$169.89

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Description

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Designed for those who demand precision, the Etymotic ER4SR in-ear monitors are a testament to over 30 years of innovation in auditory technology. With a legacy rooted in creating the world's first noise-isolating earphones, Etymotic has set the benchmark for high-definition audio. The balanced-armature drivers deliver sound with exceptional clarity, offering a precise, flat frequency response that reveals every nuance in your mix. Whether you’re a professional sound engineer or an audiophile, these IEMs provide a listening experience akin to sonic surgery, with a remarkable 42dB of acoustic isolation that ensures your focus remains uninterrupted.

The ER4SR's compact design doesn't compromise on detail. Engineered for meticulous accuracy, they maintain a strict 1dB tolerance from 100Hz to 10kHz, making them an indispensable tool for critical listening and mixing. Each pair includes a complete accessory kit with a detachable 5-foot cord, various eartips for personalized comfort, and a robust zippered case to keep your gear safe and organized. Etymotic's commitment to quality is further underscored by the performance certificate included, assuring you that your monitors meet the highest standards.

Key Features:

Balanced-armature drivers for high-definition sound
Frequency response: 20Hz–16kHz with 92% accuracy
1dB tolerance between 100Hz and 10kHz
Maximum acoustic isolation of 42dB
Detachable 5' cord and 1/4" adapter
Includes a variety of eartips, filter removal tool, replacement filters, shirt clip, and a zippered storage case
Comes with a performance certificate indicating high-quality standards

Product specs

Type	Wired
Connectivity	1/8" plug, 1/4" adapter
Fit Style	In-ear
Noise Attenuation	35dB-42dB, Passive Noise Isolating
Impedance	45 ohms
Frequency Range	20Hz-16kHz
Sensitivity	98 dB SPL
Max SPL	122 dB SPL
Detachable Cable	Yes
Cable Length	5 ft.
Case/Bag	Soft Case

FAQs

What is the main purpose of the Etymotic ER4SR earphones?: The Etymotic ER4SR earphones are designed for studio reference, providing accurate and detailed sound reproduction for critical listening and mixing.
How effective is the noise isolation on the Etymotic ER4SR?: The Etymotic ER4SR offers passive noise isolation with attenuation ranging from 35dB to 42dB, making them highly effective for reducing ambient noise.
Are the cables on the Etymotic ER4SR detachable?: Yes, the Etymotic ER4SR features detachable cables, allowing for easy replacement or upgrades.
What type of connectivity does the Etymotic ER4SR use?: The Etymotic ER4SR uses a wired connection with a 1/8" plug and includes a 1/4" adapter for versatility with different audio equipment.
Is the Etymotic ER4SR suitable for use with portable devices?: With an impedance of 45 ohms, the Etymotic ER4SR can be used with portable devices, though pairing with a dedicated headphone amplifier may enhance performance.
What frequency range does the Etymotic ER4SR cover?: The Etymotic ER4SR covers a frequency range from 20Hz to 16kHz, ensuring a wide spectrum of audio is accurately reproduced.

Videos

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InnerFidelity

The Legend Continues Etymotic ER4SR and ER4XR IEMs

InnerFidelity

ETYMOTIC - ER4SR

Bad Guy Good Audio Reviews

Etymotic Research ER4SR unboxing & ears-on (live)

Mobile Tech Podcast

King of Neutrality? Etymotic ER4SR Review

Headphone PH

Etymotic Research ER4SR Studio Reference In Ear Phones: SHOULD YOU BUY?

Intuitive Review

Reviews

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PROS

High noise isolation perfect for field recording
Flat frequency response for accurate sound reproduction
Excels in midrange clarity, revealing subtle musical details
Competent spatial imaging compared to other IEMs and headphones
Comes with an assortment of tips for comfort and sound accuracy
Provides a studio-like flat sound ideal for mixing and referencing
Durable; previous model lasted over 12 years

CONS

Lacks enhanced bass and "warmth" for recreational listening
Spatial imaging can be slightly flat on complex tracks
Deep insertion tips may require getting used to
Custom molds recommended for comfort, adding extra cost

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Etymotic ER4SR.

Build quality

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The cable of the Etymotic ER4SR is prone to microphonics, creating noise from movement, and users report limited aftermarket cable options to address this issue.
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Features and functionality

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The ER4SR requires a deep insertion for optimal sound, and the smallest triple flange tips are noted to provide the best audio quality by maintaining the necessary seal.
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Mods and upgrades

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Users have experimented with Etymotic's tuning kit, specifically mentioning red filters at 2200 ohms to improve bass presence and reduce treble sensitivity.
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Custom-fit tips through Etymotic's program, previously using ACS Customs, are a favored upgrade for long-term comfort and fit.
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Implementing a +3dB bass shelf starting at 125Hz with a 0.7Q is recommended by users for ideal tuning, enhancing bass without affecting lower mids.
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The ER3 series offers a budget-friendly alternative to the ER4, with only slight differences in driver matching accuracy.
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Use cases and applications

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The ER4SR excels in providing a neutral, detailed sound ideal for genres like metal, though it may feel bass-light for hip-hop or bass-heavy electronic music.
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The ER4SR excels in isolation, allowing users to listen at lower volumes without sacrificing detail, which is beneficial in noisy environments.
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The ER4SR is particularly well-suited for acoustic, classical, and detailed electronic music due to its precise tuning.
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User experience

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Owners with unique ear canal shapes find that looping the cable over the ear can compromise the seal, affecting the sound quality.
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Owners find the ER4SR becomes very comfortable and virtually unnoticeable with regular use, especially when compared to IEMs with wider nozzles.
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Despite higher impedance, the ER4SR can be effectively driven by smartphones, maintaining volume without distortion.
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Comparisons

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Compared to the ER4XR, users note that a custom bass shelf on the ER4SR only boosts below 150Hz, preserving the rest of the sound signature.
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The ER4SR features a balanced armature driver, offering quicker response and greater separation than the dynamic drivers in the ER2SE and ER2XR.
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Setup and maintenance

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Some users report the ER4SR effectively removes earwax during use, though opinions vary on whether it pushes wax deeper into the ear canal.
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Software and compatibility

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Wavelet app on Android offers custom EQ settings for Etymotic ER series, enhancing user experience on smartphones.
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Critic Reviews

25 Years of Making a Good Thing Better: The Etymotic ER4sr and ER4XR Page 2 | Stereophile.com

stereophile.com

Etymotic's ER4SR and ER4XR deliver an impressive audio experience, showcasing exceptional treble clarity and coherence that audiophiles will appreciate. The ER4XR’s enhanced bass caters well to those seeking a fuller sound, while the ER4SR maintains a more studio-reference tone. However, both models struggle with a lack of bass impact compared to multi-driver competitors, and some may find their soundstage narrow and shallow. Despite these drawbacks, the robust build quality and attention to detail in sound reproduction make the ER4 series a worthy investment for serious listeners. Ultimately, the ER4XR stands out as the more versatile option, recommended for its balance and durability, while the ER4SR may appeal to purists craving cleaner sound at the expense of warmth.

positive

Full Review

Etymotic ER4SR Review — Audiophile ON

audiophileon.com

Etymotic's ER4SR earphones are a double-edged sword for audiophiles. On one hand, their exceptional build quality and unrivaled isolation make them a top choice for critical listening and professional use. They deliver a flat, neutral sound that’s perfect for discerning ears but may disappoint those seeking a more musical experience. Comfort is a significant drawback, as the deep insertion can be off-putting initially, requiring an adjustment period. While they excel in revealing detail, the lightweight bass may lack the punch some listeners desire. In summary, the ER4SR is a gold standard for professionals, but casual listeners might want to explore warmer alternatives.

neutral

Full Review

Etymotic ER4SR review - SoundGuys

soundguys.com

For audiophiles craving accuracy, the Etymotic ER4SR delivers a flat sound signature that is both a blessing and a curse. While it excels in noise isolation and comes with a variety of ear tip options, its precise tuning may bore casual listeners who prefer a more dynamic sound. Additionally, at $349, they aren’t cheap, which might deter some buyers. If you’re into studio monitoring or enjoy jazz with exquisite detail, these earbuds could become your new favorites. However, if you lean towards bass-heavy genres, you may find them lacking. Ultimately, the ER4SR is best suited for those who appreciate the Etymotic legacy of sound fidelity, but they may not be for everyone.

neutral

Full Review

Etymotic ER4SR and ER4XR In-Ear Monitors - The Absolute Sound

theabsolutesound.com

The Etymotic ER4SR and ER4XR in-ear monitors deliver exceptional sound quality and impressive isolation, appealing to audiophiles and musicians alike. Their deep-insertion fit ensures remarkable soundstage precision, although it may be uncomfortable for some users. The SR offers a flat response while the XR boosts bass, catering to different sonic preferences. However, the fit may deter those unfamiliar with Etymotic's design philosophy. With solid build quality and a comprehensive accessory package, these monitors are a worthy investment for those who prioritize sound accuracy and isolation. Just be prepared for the deep insertion that might not suit everyone.

positive

Full Review

Etymotic ER4SR Review

audiodiscourse.com

While the Etymotic ER4SR is celebrated for its exceptional clarity and detailed sound, its deeply invasive fit and "dry" tonal qualities may not appeal to all. This reference-class IEM impresses with its commitment to the diffuse-field target but comes with a discomfort factor due to the triple flange tips. Although its imaging and resolution are commendable, the limited soundstage and somewhat sterile presentation can leave listeners wanting more vibrancy and engagement. Ultimately, the ER4SR shines as a technical marvel but may not deliver the musical enjoyment some seek.

neutral

Full Review

The Incisive Etymotic ER4SR Review - Headphone.ph

headphone.ph

The Etymotic ER4SR offers stellar sound isolation and a neutral sound signature that audiophiles may appreciate. However, its deep insertion design can be uncomfortable for extended use, and the overall build feels dated compared to modern competitors. While the packaging and detachable cables are a welcome improvement, the ER4SR doesn’t quite justify its price against newer models that offer better comfort and sound. If you value isolation above all and can adapt to its fit, it might be worth considering, but for many, the drawbacks could outweigh the benefits.

negative

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